Laminated Glass From Your 100% Locally owned Glass Specialists!
Laminated Safety Glass consists of two or more sheets of glass permanently bonded together by a plastic or resin interlayer.
Benefits of Laminated Safety Glass
Safety & Protection
When subjected to human or other impact the bond between the glass and interlayer adheres any broken fragments, keeping the glass intact and resisting penetration.
This important breakage characteristic significantly reduces the likelihood of serious injury, qualifying laminated glass as a Grade A Safety Glass in accordance with NZS 4223: Part 3 and AS/NZ 2208 "Safety glazing materials in buildings".
In addition the glass is unlikely to fall out if used in sloped or overhead glazing applications, providing protection.
Laminated glass offers greater protection for people and property by providing an effective barrier from attack. Although the glass will break if hit with a hammer, brick or similar object, the interlayer can resist penetration, ensuring any attempt to enter a premises will be slow and noisy. In addition the attacked glass will tend to remain in the opening, keeping wind and rain out of the building until it can be replaced at a convenient time. The type of laminated glass required will depend on the level of security sought.
Types of Laminated Glass
Safelite PVB is a laminated safety glass made with a Polyvinyl Butyral (PVB) interlayer.
Safelite CIP is a "cast in place" laminated safety glass made by pouring a special liquid resin into the cavity between sheets of glass. The resin is cured in the factory by UV light to a hard plastic state, bonding the glass sheets together.
Soundstop is an acoustic grade CIP laminated safety glass consisting of two sheets of glass with a 1.0mm or 1.5mm acoustic resin interlayer. This product has excellent sound reduction properties due to the elastic nature of the special resin interlayer. Acoustic laminated glass is specifically designed to reduce sound intrusion into buildings.
Super-Safelite is high-performance safety and security laminated glass, for forced entry protection, bullet resistance, blast resistance, cyclone resistance and prison and suicide cells.
PVB Laminated glass absorbs 99% of the sun's UV radiation while allowing the important visible light to pass through. It therefore helps to protect expensive curtains, furnishings and carpets from fading caused by the damaging effects of shortwave ultra-violet radiation.
Laminated glass is very effective in reducing the transmission of noise through glazing.
This is achieved through the sound dampening properties of the interlayer, which will vary with the type and thickness of the glass and interlayer.
Laminated glass can have a tinted interlayer or can be made with tinted or reflective glass to reduce glare and heat gain in a building. It can also be made with Low E glass for use in an IGU to reduce heat loss from the building and thus save on energy costs.
Colour and Light
Laminated glass can be made with a wide range of coloured PVB interlayers to provide special lighting effects. These colours can be combined with tinted and/or printed glass to provide special effects.
Due to the controlled nature of the laminating process, facades glazed with annealed laminated glass reduce the risk of visible distortions sometimes created by the heat treatment processes, providing significantly sharper visual transmission and reflections. These benefits are dependent on the nature of the final processed product.
Clear laminated glass is very similar to clear float glass of the same thickness, and in most cases no colour variation is noticeable. Tinted PVB laminated glass may not match tinted float glass as it is the interlayer that is tinted not the glass and the tints can vary due to a range of PVB suppliers.
The laminate can be made with tinted glass to match tinted float and some products are made in this format as standard. However, the PVB interlayer can create some polarisation of light in some lighting conditions and this may appear as haze or give a dappled appearance.
Laminated glasses with tinted interlayer do not exactly match tinted glass and care is required when colour matching glass types in a building. However the clear glass thickness in laminated glass can be increased to meet design loads without changing the tint colour so matching can be obtained with different thicknesses of glass.